Frog and switch planer



March I, 1927 1,619,355

N MARCALUS FROG AND s'wITcH PLANER Filed June 20. 1924 4 Sheets-Sheet l M m H m ATTORNEY March 1 1927.

N. MARCALUS I I I FROG AND SWITCH PLANER Filed June. 20. 1924 4 Sheets-Sheet 2 v nmmmzw 4 TTORNEY March 1 1-927.

N. MARCALUS FROG AND SWITCH PLANER 4 Sheets-Sheet 5 Filed June 20. 1924 A TTOHWEY n E g 7 Y\ 9 g I c n I. 5 t m 6 W w.

' 192 March 7 N. MARCALUS FROG AND S WITCH PLANER Filed June 20. 1924 4 Sheets-Sheet 4- ;H 1 25 min,

IN l/E N TOR 11 TTORNEY Patented Mar. 1,. 1927.

UNITED STATES PATENT OFFICE.

NICHOLAS MAncALUs, or PLAINFIELD. NEW JERSEY, .ASSIGNOR r NILEs-BEMENT- POND COMPANY, on NEW. YORK, N. Y., A CORPORATION or NEW JERSEY.

FROG- .A1\lD SWITCH PLANFR.

This invention relates to planers and like' machines and more particularly to the operating and controlling mechanism for t e tools and tool holders thereof. The planer illustrated in the accompanying drawings is constructed particularly for'the planing of frogs and switches of railway rails and is similar to that shown in a copending application, Serial No. 67 5,203, filed November 16, 1923. Such work requires very heavy cutting operations and the machine must of course be constructed accordingly. Furthermore, these heavy cuts subject the tools to extremely heavy strains and vibrations and make the rigid supporting of the tools essential.

One of the objects of my invention is to provide an improved tool feeding mechanismfor planers and like machines, such mechanism. preferably including an electric feed motor and automatic controlling means therefor.

Anotherobject of my invention is to provide improved clamping means for the tool supporting members, such clamping means preferably being operated from the feed motor and being adapted through a simple and novel mechanism to automatically release the tool supporting members prior to each feeding operation and clamp the same after eachfeeding operation.

'-,Another object of my invention is. to pro- .vide means in'connection with the above described feeding and clamping means for positively pivoting the tool holder outwardly "at the end of each cutting operation whereby marring of the work .by the tool during the return or noncutting'stroke of the work table is prevented. I

With the above and other ob ects1n view,

my invention consists inthe features of. con-.. struction and operation set forth in the folillustrated in the lowing specification and In. such drawings accompanying drawings.

annexed hereto and forming a part of'thisspecification, I have shown-certain einbodi ments ofmy invention in a planer but it will be understood that the invention can be otherwise embodied and that the drawings are not to be construed as defining or limit-' ing the scope of tliedilVIltiOn, the claims appended to-thisspecification being relied upon for that purpose."

Referring .to the figures of the'drawings':

shown in Fig. 18.

Figure 1 is an isometric view of a planer embodying my invention.

Fig. 2 is a fragmentary plan view thereof, partially in section.

Fig. 3 is a front elevationpf Fig. 2, partially in section.

Fig. 4 is an enlarged sectional view taken on line 4.4 of Fig. 2.

Fig. 5 is a fragmentary detail View partially in section on line 55 of Fi '4.

F g. 5 is a perspective view of a etail.' Fig. 6 is a front end elevation of the cross rai 1 Fig. 7 is a view like Fig. 6 but showing portions thereof broken away. Fig. 8 is a sectional view taken on line Of 6. I Fig. 9 is a detail view showing the tool holder clamping shafts.

Fig. .10 is an enlarged detail sectional view of the tool slide clamping mechanism taken on line 1010 of Fig. 2.

Fig. 11 is a View thereof taken on line 11' of Fig.2,-

Fig. 12 is a detail view of the saddle clamping mechanism taken online 12-12 of Fig. 13. i

Fig. '13 is a view thereof taken on line Fig. 14 is a viewfthereof taken on line 1414 of Fig. 6. q

Fig. 15 is an enlarged detail view of the feed controlling mechanism, such view being takenapproximately on line 15-15 of Fig.8.

Fig. 16 is a detail view of the feed pinion shifting mechanism.

Fig. 17 is a sectional view thereof on line 17 -17 of Fig. 1c.

Fig. 18 is a sectional view illustrating the mechanism for operating the feed-motor controller.

Fig. 19 is a plan In the'drawings, 1 indicates the'bed a planer having a work table 2 s'lidablymount? the uprights and is adapted to slidably supview of the mechanism.

ioo

I A cross rail 4 is mounted to slide vertically on port a pair of tool head-saddles 5 and 5' holder above each tool 12 and 12.

thereon. Bolts 6 threaded into the rail are adapted to clamp the rail to the uprights. Tool slides 7 and 7 are mounted for vertical movement in the saddles and 5' in the usual manner. Swivelly mounted on a center pin 8 on each tool slide is a block 9 and a tool holder 10 pivoted to the block at 11 is adapted to support a pair of tools 12 and 12 therein. V k

The upper arcuate portion of each block 9 is provided with teeth 13 engaged by a worm l4. Rotation of the worm 14 is adapted to angularly adjust each block about its pivot 8. An eccentric bolt 15 rotatably mounted ina forwardly extending portion 16 of each slide and provided with an operating handle 17 thereon is adapted to securely clamp each block in its adjusted position. In the drawings, the handles are shown in the blocl; clamping position. The blocks can be unclamped by moving the handles outwardly. Other means are provided at 18 for securing the tools 12 and 12 in each tool holder 10.

A toothed plate 19 is bolted to the tool These plates are slotted to permit the plates to be Vertically adjusted to engage the upper ends of the tools and, when clamped in such position by bolts 20, the plates take the upward thrust of the tools in a very rigid manner.

For thepurpose of securing rigidity, the uprights 3 are preferably constructed and connected together in the mannershown in Fig. 2. The cross rail enga 'ng portions of the two uprights are ma e very wide whereby such portions project inwardly to approach each other very closely at 21, these portions being secured together by bolts at 22. 'Theforward faces of these portions are finished off at 23 to receive the rail. The rail has a rearwardly extending portion 24 extending between the uprights. A clamping plate 25 and bolts 26 are provided on this portion for securing the rail to the uprights. This construction provides a rigid backing extending substantially along the entire operating portion of the rail. A similar construction is disclosed and claimed in Patent No. 1,519,332dated December 16, 1924.

The table 2 is adapted to be reciprocated from a main motor (not illustrated). A

motor 27 is mounted on a rearwardlp extending bracket 28 on thecross rail and. as illustrated in the drawings, this motor is adapted to feed and traverse the tool supports and to move the cross rail on the uprights. The main motor and the motor 27 are automatically controlled by a pilot switch 29 operated by table dogs 30 engaging a switch arm 31. This mechanism and its operation are more fully disclosed in Patent No. 1,299,192. The specific tool feed.-

ing and traversing mechanism illustrated in rotatably mounted in the cross rail are respectively connected to the saddles 5 and 5' whereby rotation of such screws serves to adjust the saddles alon the rail in the usual manner.

A pair of shafts 38 and 39 rotatably mounted in the cross rail are res ectively connected to the tool slides 7 and A spiral gear i 40 rotatably mounted in the saddle 5 is splined to the shaft 38. Thisgear is in mesh with spiral gear teeth on a nut-41 r6- tatably supported in the saddle 5 and threadedly engaging a non-rotary screw 42 carried by the slide 7, Alike connectionis provided from the shaft 39 to a screw 42 in the slide '7; Rotation of the shafts 38 and 39 are therefore respectively adapted to adjust the slides 7 and 7. p

The motor 27 is adapted to operatethe shafts 36, 37 38 and 39 to feed and traverse the saddles 5 and 5' and slides 7 and 7. This motor is also adapted to operate the shaft 34 to adjust thecross rail on the uprights. This motor is furthermore adapted to automatically operate clamping mechanism for clamping the'saddles and slides for each cutting operation 'and to release the same for each feeding operation. The operative connections from the motor to these mechanisms is hereinafter specifically described.

The driving connections from the motor 27 to the shafts 36, 37, 38 and 39 for automatically feeding the saddles and slides is as follows: The motor shaft 43 is rotatably supported in a housing 44 secured to the front end of the cross rail, this housing preferably being an integral part of the motor supporting bracket 28. l worm 45 splined to this shaft and rotatably supported in a block 46 is in mesh with a worm gear 47 loose'on a shaft 48. A feed gear 49 is keyed to the hub of the worm gear (Fig. 8) and a second feed gear 50 is also loosely mounted on the shaft 48. A wide pinion 51 'in mesh with gear 49 is also in mesh with a wide pinion 52 in mesh with gear 50. Thus when the gear 49 1s rotatedm one direction by the motor, the gear 50 is rotated therefrom at the same speed in the opposite direction? A pinion 53 splined to each of shafts 34, 3 6, 37, 38 'and 39 is adapted to be shifted into. mesh with either of gears 49 and 50.

. A shifting device for each of these pinions the pinion in engagement with either gear' or in a neutral position midway between the gears. 4

The mechanism for automatically controlling the extent of motor rotation in the feedingoperation is as follows: Referring particularly to Figs. 7, 8 and of the drawings, the circuit to the motor 27 passes through a switch in a controller box 58. An

arm 59 keyed to a shaft 60 has an adjustable element 61 in the free end thereof adapted by movement inwardly of the box to break the motor circuit. The shaft '60 is rotatably and slidably mounted in bearings 62 and 63. An arm .64 on the shaft has a roller 65 at its free end adaptedto .ride on the outer face of the gear 50. as the, latter is rotated. This face of gear isprovided therearound with a plurality of series of differently spaced depressions "66.

The upper portion of the shaft is toothed to-'provide a rack 67 engaged by a pinion 68 loose on the shaft 48. By means of a knob 69 the pinion can be rotated, to

adjust the shaft 60 longitudinally and bring the roller into line with any one of the said series ofdepressions 66. spring 70. normally operates to hold the roller 65 against the said gear face. When the roller comes opposite a depression 66, the roller .drops thereinto whereupon the shaft 60 and arm 59 rock sufliciently to break the circuit within the controller-box 58. In the drawings, Ihave illustrated the gear 50 as pro-.

vided with five series of depressions 66 but it will be understood that any number of series of such depressions can be provided 1 as desired. As s own in Fig.6, a pointer 71 in connection with five points 72 provides means for indicating the proper rotary adjustrnent of the knob 69 to bring the roller into line with any'onej of the five series of" depressions.

y In the "feeding operation the gear 50 is rotated in the direction of the arrow shown inFig. 7 .the gear 49 of course rotating in the opposite direction. The pinions 53 are meshedwith one or the other of the gears 49 or 50, depending upon the dire-"tion it is desired to' feed the'saddl-esand slides controlled therebfy. -The amount,- of feeding movement imparted by the motor depends upon the adjusted-position of the. roller-.65.- The innermost series of depressions "66 con tains five equally spaced depressions and the roller, ,when opposite this series, therefore permits a vfeedm movement equal to onerotation of t Q gear 50. The outermost series of depressions 66 contains if twentyeight equally spaced. depressions and the roller, when opposite th1s series, therefore permits a feeding movement equal to onetwenty-eighth rotation of the gear 50. The T0 .the feed motor for automatically clamping the saddles 5 and 5 to the'cross rail and the slides 7 and 7 to the saddles after each feedingoperation and for releasing such clampmg mechanism prior to each feedlng operation. This'mechanism will now be described.

The saddle 5 (Figs. 3, 12 and 13) is ac-- curately adjusted onthe cross rail by means of a taper gib 73, A, saddle clamping element 74 slidably mounted in. the saddle rests on this gib. shaft75fmountedin the saddle above this element rotatably-supports a pair of gears 7 6 and 77 thereon, the gear 7 6" being'provided with an eccentric-v hub 78' in engagement with the clamping element 74. In Figs. 12 and 13, the gear 76' and its eccentric hub 7 8 are shown in the saddle clamping position. Rotation of the gear 76 180 will release the saddle. clamping. pressure-on the element 74' and gib 73'. like mechanism indicated in the drawing by like reference characters not primed.

The slides 7 and 7 are provided with similar clamping-mechanisms (Figs. 2, 3,

6, 10 and 11). .The' slide 7 is accurately adjusted in the saddle by means of a taper gib 7 9. A slide clamping element 80 mounted in the saddleeengages at oneside against this gib and at its other side against an inclined portion. of a vertical rod 81. At its upper clamp the slide in the saddleand rotation'of the gear in the opposite direction is adapted to move the rod downwardly and release the clamping mechanism.- 7 a i In addition to its slide clamping function,

the rod 81 also operates to-automa'tically and positively pivot the tool holder 10 outwardly at the end of each cutting operation whereby marring of the work by the tool during the return or-non-cuttingstroke of the work table is prevented. As shown in-Fig. 11. I

the saddle 5 carries an element 82therein .forwardlj of the rod 81. The forward face of this elem'entpre'sents a vertical surface engaging a .pin 83 carriedrby the tool holder 10. The supporting shank of the element the side, the shank of the element 82 is The saddle 5 is provided with a forced out of the recess 84 in a manner to pivot the tool holder outwardly. Coni' versely, when the rod moves upwardly to clamp the slide for the cutting operation, the recess 84 permits the tool holder to pivot back to its normal cutting position The clamping gear 76, 77 and 7 6, 77 are respectively operated by gears 85 and 86.

The gear 86 is splined' to a shaft 87 and the gear 85 is splined to a sleeve 88 loose on this shaft, the shaft being rotatably supported in the saddle5 and the sleeve rotatablysupported in the saddle The gear 86 is so positioned as to be shifted into mesh with either of its cooperating clamping gears 76 and 77. A lever pivoted on the saddle'5 at 8 9 has an arm 90 carrying a yoke 91' straddling this gear 86 and a handle 92' is provided on the lever for shifting this gear along the sleeve into mesh with either of gears 76 and 77. A gear shifting mecha ,nism including a handle 92 is provided on ,the Saddle 5 for shifting the gear 85 into are connected to the block by means of an element 97 shown in Fig. 5. A central stud' 98 on this element engages within a coopei ating circular recess in the top of the block. A pair of lugs 99 and 100 on the top of .the element respectively engage within cooperating recessesin the bottoms'of the racks 93 and 94. The construction is such that as the block is moved longitudinally, the racks are moved with balanced forces therewith. It will be seen that since the element 97 is free to rotate about its central stud 98, the two racks'will be operated with balanced forces in a manner to effect equal clamping of the saddles and slides. A spring pressed plun er 101 and a'ball bearing 102 are provide at the forward end of the block fortaking the thrust thereof during the unclamping and feeding operations as hereinafter described.

During the unclamping and feeding oper ations, the motor is rotated in a direction to rotate the gear in the direction indicated by the arrow in Fig. 7. During the clamping operation, the motor is rotated in the opposite direction, these rotations being automaticall controlled by the pilot switch 29 in timed relation to the table reciprocation. A pair of pawls 103 of slightly different lengths engage the gear 50 and normally ermit rotation of the gears 49 and 50 in t e unclamping and feeding directhat shown by the arrow in Fig. 7

tion but prevent rotation thereof in the o posite direction. A pawl 104 engages t e gear 49 and normally prevents rotation of the gears 49 and 50 in the unclamping and feeding direction. In Fig. 7, the parts are shown in the unclamping and feeding position, the pawl 104 being held up in the disengaged position by a pin 110 on the block 46.

The motor 27 can be c'ontinuousl operated for traversing the rail saddles and slides by the following mechanism. A control box 105 mounted on the bottom of the housing i l has two spring pressed contacts 106 and 107 extending outwardlytherefrom'.

A handle 108 pivoted to the housing has portions thereof extending over the contacts 106 and 107 whereby movement of the handle in one direction engages one contact to rotate the motor in one direction and movement thereof in the opposite direction engages theother contact to rotatev the motor in the opposite direction.

lVhen operating themotor in the direction indicated by the arrow in Fig. 7 (upward movement of the handle 108), the saddles prevent rotation of the motor inthis direction. It is therefore obvious that the motor cannot be rotated in this direction for traversing without first disengaging the pawls l03 and holding the block 46 from movement backwardly to the saddle and slide clamping position. The following described mechanism is provided for overcoming this objection.

A rod 109 extending upwardly through the housing 44 has its upper end U-shaped over the block 46, the short leg of the rod having a pin 110 therein above a tail on the pawls 103. Downward movement of the handle 108 is adapted to force the rod 109 fdownward and, through pin 110*,to disengage the awls 108 and to engage the U portion of t e, rod within a recess 111 in the block whereby rearward movement of the block is prevented. In such position of the.

parts, the mechanism is free to be continiu ously operated in the direction opposite to A spring 112 surrounding the rod 109 normally holds this rod in its uppermostposition so that when the handle 108 is elevated the rod 109 is allowed to rise.

Referring. to Figs. 18 and 19, a controller 126 provided for governing the operation of the feed motor 27; The controller 120 in .man respects operates in the manner of the imit switch which is provided in many planer control systems. However, as above in this'applicati'on is set forth in the applica- 15 tion of R. C. Deale et a1, Serial No. 726,345, filed July 16, 1924.

The housing or support 44 carries a bracket 121 which directly supports the controller 120. The shaft'122 of the controller is pinned in any suitable manner to a stud bolt 123 which projects through the bracket I 121. The bolt 123 carries a collar 124 which has two arms 125 and 126 projecting from it. The arm 125 carries two rollers 127 and 128 and the arm 126 carries a single roller 129. The rollers 129 and 127 are adapted to engage cam surfaces 130 and 131 on a cam member 132. The cam member 132 is secured to the block 46 and accordingly is operated in accordance with the clamping and unclamping movements effected by the block. The roller 128 is adapted to engage the wedge-shaped end of a plunger 133. A spring member 134 exerts a force to maintain the plunger 133 in engagement with the roller 128. c Assuming the block 46 tov be moved towards the right, as shown in Figs. 18 and 19 of the drawings, to effect a clamping operation, the cam surface 131 of the cam member 132 will engage the roller 127 and force the plunger 133 towards the right against the action of the spring member 134. When the collar 124, which carries the roller 127, is rotated through a limited angle, the spring '134acting on the plunger 133 will move the roller 127 out of engagement with the cam surface 131 and move the roller 129 into engagement .with the cam surface 130. The feed-motor controller 120 is now in osition for operating the feed motor to e ect an unclamping operation and a feeding movement when the pilot switch 29 is operated at the end of the cutting stroke of the planer.

When the feed motor 27 is operated in a re-,

verse direction at the end of the cutting stroke, the block 46 is moved towards the left, as shown in Figs. 18 and 19 of the drawings. Such movement of the block causes the cam surface 130 of the cam member 132 to rotate the, drum controller 120 by means of the roller 129. When the collar 124 is rotated through a predetermined distance, the plunger 133 is operated by the spring 134 to move the collar to the position shown in Fig. 19-of the. drawings. The controller 120 opens the feed motor circuit and establishes a dynamic braking circuit through the feed motor after a predetermined feeding movement at the end of the cutting stroke. The controller opens the feed motor circuit and permits such motor to effect a drifting stop when a clamping operation is being effected at the end of the return stroke.

The general operation of the machine is as follows: Before beginning the cutting operation, the pinions 53 of the tool holders it is desired to feed are engaged with one or .the other of the gears 49 and50, depending upon the direction it is desired to feed. The

construction is such that the handles 54 for the saddlescrews 36 and 37 should be pointed in the direction it is desired to feed the saddles. For example, as shown in Fig. 3, the handle 54 for the screw 37 pointing to the left, is adapted-to feed the saddle 5 to the left. Also the knob 69 should be ad justed to provide the desired amount of. feeding movement. Furthermore the gears and 86 should each be shifted into engagement with one of gears 76, 77 and 7 6 and 77 ',.depending upon whether it is desired to clamp the'saddles or slides. These adjustments having been properly made and thetools properly set. in position, the operation is as follows:

As shown in Fig. ,7, the unclamping and feeding movements have just been completed and the feeding mechanism is at rest. The work table 2 however is continuing its backward stroke in the non-cutting direction. Engagement of the right hand dog 30 Fig. 1) with the arm 31 of the pilot switc 29 reverses the direction of the main motor and table reciprocation and energizes the feed motor 27 to rotate the gear 50 in a di rection-opposite to the arrow shown in Fi 7. Rotation of the gears 49 and 50 in th1s direction however is prevented by the pawls 103. The worm gear 47 being thus held against rotation, t e rotation of the worm 45 will operate to move the block 46 backwardly (Fig. 4). This operation rotates the shaft 87 and sleeve 88 anti-clockwise and clamps the saddlesor slides through the mechanism heretofore described. The clamping operation will stall the motor 27 before the rear end of the block 46 engages the housing the table continues its stroke in the cutting direction.

When the left hand dog 30 (Fig. 1) hits the pilot switch arm 31, the direction of the main motor and table is reversed and the motor 27 is energized to rotate the gear 50 in the direction of the arrow (Fig. 7). The pawl 104 however prevents rotation of he gears 49 and 50 in this direction. The worm gear 47 being thus held against rotation, the rotation of the worm 45 will operate to 44. With the tools thus clamped,

move the block 46 for uirdly. This eratlon rotates the shaft 8! and sleeve 88 0 00k- Wlse (Fig. 4:) and unclamps the saddles and slides. This forward unclamping movement operates through the pin 110 on the block 46 to raise the pawl 106i to permit rotation and element 61 sufliciently to break the hold-' ing circuit of a switch which controls the motor 27 The circuit for performing this operation passes through the control box 58. The main circuit of the motor 27 is thereupon broken and the motor stopped. It should be understood however that the coasting inertia of the gear is sufficient to raise the roller 65 out of the depression 66 preparatory to the next feeding operation before the gear stops. The tool holders have now been fed the desired amount, the feed mechanism is at rest, the table is continuing its movement in the non-cutting direction, and the various parts of the machine continue on again through the cycle of operations above described. The electrical connections for automatically controlling the feed motor, which do not comprise a. part of my present invention, are more fully illustrated and described in copending application of R. C. Deale et 211., Serial l lo. 723163346, filed July 16, 1924, referred to above.

What I claim is:

1. A tool feeding mechanism for pianers or the like comprising in combination, a tool support, a pair of feed gears, means for optionally connecting the tool support to the feed gears, power means automatically'operative to intermittently and simultaneously rotate the feed gears a predetermined amount in relatively opposite directions, and rotary means mounted coaxially of the feed gears for varying the amount of gear rotation.

2. A tool feeding mechanism for planers or the like comprising in combination, a tool support, a pair of feed gears, means for optionally connecting the tool support to the feed gears, a motor for siii'iultaneously rotating the feed gears in relatively opposite directions, and means for stopping the motor after a predetermined rotation of the said gears, the last said means being adjustable whereby to vary the amount of gear rotation.

3. A tool feeding mechanism for planers or the like comprising in combination, a tool support, a pair of feed gears, means for optionally connecting the tool support to the feed gears, a motor for simultaneously 1: 1 tating the feed gears in relatively opposite tating the feed gears in relatively opposite directions, and means controlled by one of the feed gears for stopping the motor after a predetermined rotation of the said gears, the last said means being adjustable whereby to vary the amount of gear rotation.

5. A tool feeding mechanism for planers or the like comprising in combination, a tool support, a pair of feed gears, means for optionally connecting the tool support to the feed gears, a motor for simultaneously rotating the feed gears in relatively opposite directions, a switch in the motor circuit, and

switch controlling means engaging the face of one of the feed gears, the said face being provided with means for operating the controlling means to open the circuit after a predetermined rotation of the said gears and the ccutrolling means being adjustable over the said face to vary the amount of the rotatior.

(i. tool feeding mechanism for planers or the like comprising in combination. a tool a pair of feed gears, means for opconnecting the .ool support to the feed scars, a motor for simultaneously rotati. the feed gears in relatively opposite ms, a switch in the motor circuit, and controlling" means engaging the face of me of the feed gears, the said face being ed therearound with a plurality of of dillerently spaced depressions for the controlli 5;? means. the dropping of the cm'itrolling means into one of the depressions being adapted to open the circuit and the controlling means being adjustable over the said i ace to any of the said series whereby to vary the amount of gear rotation.

7. In a machine tool. the comb nation of a support, a tool carrying maniac-r thereon, means including a power o 'ieralell worm engaging a worm gear for iiiterriittently feeding the member, clamping means for the member, and means engaging the worm and operatively coniieriral to the clamping means for clamping the mmnhcr lo the support, rotation of the worm in one direction being adapted to l'QlCllh u'P- the member and thereafter feed the same d rotation of the worm in the opposite t .on being: adapted to clamp the member.

8. In a machine tool,

combinution of a support, a tool carrying member thereon,

rotation of the-worm in one direction being adapted to release the member and thereafter feed the same and rotation of the worm in the opposite direction being adapted to clamp the member, and means for'continu- -ously rotating the worm. gear for tool traversing purposes.

9. In a machlne tool, the combination of a support, a tool carrying member thereon,

. means including a power operated worm engaging a worm gear'for intermittently feed: ing the member. and means operated by axial movement of the worm for clamping the member to the support after the feeding operation and for releasing the same therefrom prior to the feeding operation.

10. In a machine tool, the combination of a support, a tool carrying member thereon, means including a power operated worm engaging a worm gear for intermittently feeding the member, and means operated by axial movement of the worm for clamping the member to the support, rotation of the worm in one direction being adapted to release the member and thereafter feed the same and rotation of the worm in the opposite direction being adapted to clamp the member.

11.- In a machine tool, the combination of a support, a tool carrying member thereon, a worm gear for feeding the member, a power- 0 erated worm engaging the worm gear, a b ock rotatablysupporting the worm, the block and worm being mounted for sliding movement, clamping .means for the member, and operative connections between the clamping means and the block whereby rotation of the worm in one direction slides the block in one direction to clamp the member and rotation of, the worm in the opposite direction slides the block in the opposite direction to unclamp the member.

12. In a; machine tool, the combination of a support, a tool carrying member thereon, a worm gear for feeding the member, a powel operated worm engaging the worm gear, a block rotatably supporting the Worm, the block and worm being mounted for slid ing movement, clamping means for the member, operative connections between the clamping means and the block whereby rotation of the worm in one direction slides the block in one direction to clamp the member and rotation of the worm in the opposite direction slides the block in the opposite direction to unclamp the member, means for continuously rotating the worm and worm gear for tool traversing purposes, and means for holding the block against sliding movement in the clamping direction during the traversing operation in one direction.

13. In a machine tool the combination of a support, a tool carrying'membcr thereon, a worm gear for feeding the member, a power operated worm engaging the worm gear, a block rotatably supporting the worm, the block and worm being mounted for sliding movement, clamping means for the memher, a pinion connected to the clamping means, a rack connected to the block and engaging the pinionwhereby rotation of the worm in one direction moves the block and rack in one direction to clamp the member and rotation of the wormin the opposite direction moves the block and rack in the opposite direction to unclamp the member.

14. In a machine tool, the combination of a support, a tool carrying member thereon, means including a power operated worm engaging a worm gear for intermittently feeding the member, clamping means for the member, means engaging the worm and op-- eratively connected to the clamping means for clamping the member to the support, rotation of the worm in one direction being adapted to release the member and thereafter feed the same and rotation of the worm inthe opposite direction being adapted to clamp the member, and means for preventing rotation of the worm gear in the feeding direction until the unclamping operation has been effected. v I

15. In a machine tool, the combination of a support, a tool carrying member thcre-- on, means including a power operated worm engaging a worm gear for intermittently feeding the member, means operated by axial movementof the worm for clamping the member to the support, rotation of the worm in one direction being adapted to release the member and thereafter feedth'e' same and rotation of the worm in the opposite direction -being adapted to clamp the member, a pawl for preventing rotation of,

the worm gear in the feeding direction until the unclampingoperation has been effected, and means adapted to release the pawl upon axial movement of the worm in the unclamping direction.

16. In a machine tool, the combination of a support, a tool carrying member thereon, means including a power operated worm engagmg a worm gear. for lnternuttently feeding the member, means operated by axial movement of the worm for clan'iping the member to the support, rotation of the worm inone direction being adapted to release the member and thereafter feed the same and rotation of the worm in the opposite direction being adapted to clamp the member, and means for preventing rotation of the worm gear in the non-feeding directionwhereby the worm upon rotation in the non-feeding direction moves axially to clamp the member.

17 In a machine tool, the combination of a support, a tool carrying member thereon, means including a power operated worm engaging a worm gear for intermittently feeding the member, means operated by axial movement of the worm for clamping the member to the support, rotation of the worm in one direction being adapted to release the member and thereafter feed the same and rotation of the Worm in the oppo' site directionbeing adapted to clamp the member, means for preventing rotation of the worm gear in the non-feeding direction whereby the worm upon rotation in the non feeding direction moves axially to clamp the member, means for continuously rotat' ing the worm and worm gear for tool traversing purposes, and means for rendering the third mentioned means ineffective during the traversing operation in one direction. f

18. In a machine tool, the combination of a plurality of tool supports, means adjustably supporting the tool supports, means including a power operated worm engaging a worm gear for intermittently feeding the supports, and means operated by axial movement of theworm for clamping the supports to the first said means with balanced forces after the feeding operation and for releasing the same therefrom prior to the feeding operation.

19. In a machine tool, the combination of a pair of tool supports, means adjustably supporting the tool supports, clamping means for each tool support, means including a power operated worm engaging a worm gear for intermittently feeding the supports, and means including a shaft for each tool support respectively connecting the clamping means with theworm whereby rotation of the Worm in one direction will release the clamping means prior to the feed ing operation and'rotat-ion thereof in the opposite direction will plamp the tool supports after the feeding operation.

20. In a machine tool, the combination of a pair of tool supports, means adjustably supporting the tool supports, clamping means for each tool support, means includ ing a power operated worm engaging a worm gear for intermittently feeding the supports, a pair of coaxially mounted shafts for actuating the clamping means for said pair of tool supports, and a pair of gears respectively mounted on theshafts and connected to the worm, whereby rotation of the worm in one direction will move said worm axially to rotate said shafts for the clamping means and release the clamping means prior to the feeding operation and rotation thereof in the opposite direction will move said worm axially in the opposite direction and clamp the tool supports after the feeding operation.

21. In a machine tool, the combination of a cross rail, a saddle slidably mounted thereon, a tool slide in the saddle, means for clamping the saddle to the rail and the slide to the saddle, means including a power operated worm engaging a worm gear for in termittently feeding the saddle and slide, and means operatively connecting the clamping means and worm whereby rotation of the worm in one direction Will move said worm axially to release the clamping means prior to the feeding operation and rotation thereof in the opposite direction will move said worm axially in the opposite direction to effect the clamping after the feeding operation.

22. In a machine tool, the combination of a cross rail, a. saddle slidably mounted thereon, a tool slide in the saddle, means for clamping the saddle to the rail and the slide to the saddle, means including a power operated Worm engaging a Worm gear for intermittently feeding the saddle and slide, a clamping shaft on the cross rail operati'vely connected to the Worm, and means for optionally connecting the shaft to either the saddle clamping means or the slide clamping means, the construction being such that rotation of the worm in one direction releases the clamping means prior to the feeding operation and rotation thereof in the opposite direction effects clamping by the clamping means.

23. In a machine tool, the combination of a support, a tool carrying member mounted thereon, poweroperated means for intermittently feeding the member, a clamping elementmounted to slide transversely of the said feeding movement, and means automatically operated in timed relation to the feeding means for transversely moving the said element to clamp the member after each feeding movement and to release the same prior to each feeding movement.

24. In a machine tool, the combination of a support, a tool carrying member mounted thereon, power operated means for intermittently feeding the member, a clamping element movable transversely of the said feeding movement, a rotary cam operative against the said element, and means automatically operative in timed relation to the feeding means for rotating the cam to clamp the member after each feeding movement and to release the same prior to each feeding movement.

25. In a machine tool, the combination of a support, a tool carrying member mounted thereon, means including an electric motor for intermittently feeding the member, a clamping element mounted to slide transversely of the said feeding movement, and

means automatically operated by the motor ,for transversely moving the said element to' clamp the member after each feeding operation and to release the same prior to each 'feeding movement.

26. In a machine tool, the combination of a rail, a saddle slidably mounted thereon,

a tool slide in the saddle, power operated means for intermittently feeding the saddle andslide, two clamping means mounted in the saddle and movable transversely of the saddle movement and slide movement respeetively, and means automatically operated in timed relation to the feeding means for moving the clamping means to clamp the saddle and slide against movement-relative to their supports after each feeding move ment and to release the same prior to each feedin movement. 1

27. n a machine tool, the combination of a rail, a saddle slidably mounted thereon, a tool slide inthe saddle, a pair of taper gibs respectively operative to accurately slidably fit the saddle and slide to their supporting members, clamping means mounted in the saddle adjacentthe gibs, and means v for forcing the clamping means against the gibs to clamp the saddle and slide against movement in their supports.

28. In a machine tool, the combination of a rail, a saddle slidably mounted thereon, a tool slide in the saddle, two clamping means for respectively clamping the saddle and slide against movement relative to their supports, a pair of gears on the saddle respectively connected tothe clamping means,

and power operated means for operatingthe said gears to clamp the saddle and slide against movement in their supports.

29. In a machine tool, the combination of a cross rail, a tool carrying member thereon, a pivoted tool holder carried by the member, means including a power operated Worm engaging a worm gear for intermittently feeding the member, and means operated by axial movement of the worm for pivotingthe toolholder outwardly prior to each feeding operation.

after the feeding operation and-for releasing the same therefrom and pivoting the' tool holder outwardly prior to the feeding ope'ration. In testimony whereof, I hereto aflix my signature.

NICHOLAS MAROALUS,

30. In a machine tool, the combination 

